Home / 920,120.66-1,379,061.90-492,605.90

Finding the Fourth Proportional to 920,120.66, 1,379,061.90 and 492,605.90

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Solution

The fourth proportional to 920,120.66, 1,379,061.90 and 492,605.90 is: 738,309.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,120.66 : 1,379,061.90 = 492,605.90 : x
  2. Step 2: Convert to fraction form
    920,120.66/1,379,061.90 = 492,605.90/x
  3. Step 3: Cross multiply
    920,120.66x = 1,379,061.90 × 492,605.90
  4. Step 4: Simplify right side
    920,120.66x = 679,334,028,405.21
  5. Step 5: Solve for x
    x = 679,334,028,405.21/920,120.66
  6. Step 6: Final answer
    x = 738,309.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.